On the classification of defects in the smectic phases Sm A and Sm C
Open Access
- 1 January 1978
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 39 (2) , 29-32
- https://doi.org/10.1051/jphyslet:0197800390202900
Abstract
We calculate the homotopy groups which yield the topological classification of defects for the smectic A and C phases. After having shown how a direct use of classical methods in algebraic topology lead to the required results, a more intuitive and geometrical discussion of the results is given, which relies on the fact that a specific disclination line should disappear in a physical transition from the Sm C to the Sm A phasesKeywords
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